Howling Sound from Front End - CV? - JeepForum.com

 
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post #1 of 12 Old 09-28-2009, 05:38 PM Thread Starter
01Limited45324
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Howling Sound from Front End - CV?

I've known for a little bit that my CV boot on my passenger front is torn to shreds. I didn't have the money or the time to really worry about it but I've now got a howling sound when I let off the gas. Related? I'm thinking it is, I just want some opinions on it. Only happens above 30 mph or so.


-Tom

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2002 BMW 530i
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post #2 of 12 Old 09-29-2009, 10:30 AM
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Howling sound when you let off the gas sounds more like carrier bearings to me or at least something differential related. Ive never heard anything like that connected to a bad CV joint.
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post #3 of 12 Old 09-29-2009, 10:31 AM
iluvtruenos
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Wheel bearing.

I had the same exact problem.

It's a cylic sound, going up and down in pitch, correct?

My Jeep is a chick magnet with reverse polarity.

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post #4 of 12 Old 09-29-2009, 10:35 AM Thread Starter
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Quote:
Originally Posted by iluvtruenos View Post
Wheel bearing.

I had the same exact problem.

It's a cylic sound, going up and down in pitch, correct?
Sounds about right. I had it in the rear when I bought the Jeep and it turned out to be bad axle seals. $500 later I was back on the road.

-Tom

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post #5 of 12 Old 09-29-2009, 11:16 AM
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does the noise change in turns?

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post #6 of 12 Old 09-29-2009, 11:18 AM Thread Starter
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Originally Posted by QuadraTokn View Post
does the noise change in turns?
That's a negative.

-Tom

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post #7 of 12 Old 09-29-2009, 11:30 AM
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Front drive shaft?

yup

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post #8 of 12 Old 09-29-2009, 11:37 AM Thread Starter
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Quote:
Originally Posted by 99avant View Post
Front drive shaft?

yup
I contemplated it but it's weird... It didn't start until about 300 miles after I saw my busted CV boot. I just feel that they're connected, but I'm not too sure. Guess not...?

-Tom

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post #9 of 12 Old 09-29-2009, 12:56 PM
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I'd recommend upgrading your stock prop shaft to a double cardan ujoint style. much better than the stock 99 wjs have. the 02s have it i believe or you can go the best route with a Tom Woods drive shaft (tomwoods.com i think).

The "whining" noise sounds like it could be a viscous coupler or somethign in the tc maybe. the propshaft wear would be a clicking or grinding sound.

--shawn
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post #10 of 12 Old 09-29-2009, 01:04 PM
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Take off your front DS, and see if the noise goes away. You may be surprised.

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post #11 of 12 Old 09-29-2009, 02:56 PM
iluvtruenos
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Go 30mph down an empty road where you can swerve from side to side from lane to lane.

If when you swerve one way the noise goes away, then it's your wheel bearings.

Best place to do it is on a highway on/off ramp, if you've got one that shoots to the right and left.

My Jeep is a chick magnet with reverse polarity.

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post #12 of 12 Old 09-29-2009, 04:15 PM
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Probably your pinion bearing in the front diff. I have the exact same noise and that is what is causing it for me.

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